Pencil.



No. 729,783. PATENTED JUNE 2, 1903.

\ F. W. usson.

PENCIL.

r APPLIOA-TION FILED OUT. 13, 1897. N0 MODEL.

threaded opening linr'ril States Patented June 2, 1903.

FREDERICK W. MUSSON, OF PHILADELPHIA, PENNSYLVANIA.

PENCIL SEECIFIGAIEON forming part of Letters Patent No. 729,783, dated June 2, 1903.

Application filed October 13, 1897. Serial No. 655,029. (No model.)

To aZZ whom it may concern.-

Be it known that I, FREDERICK W. MUssoN, a citizen of the United States, residingat Philadelphia, in thecounty of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Penoils, of which the following is a specification.

My invention relates to lead-pencils and the like, and has for its object to provide a new and iinproved'pencil having a movable lead.

My invention is illustrated in the accompanying drawings, wherein Figure 1. is a view of one form of pencil. l ig. is a view of Fig. 1 in part section with. the tip removed. Fig 3 is a detail of one form of a device to be inserted in. the holder. Figs. 4, 5, and 6 show modified constructions.

Like letters refer to like parts throughmit the several figures.

As illustrated in Figs. 1 and 2, the holder A is provided with an opening in which is located the lead I This holderis screw-threzuled and the lead is also provided with screw-threiuls. The tip 0 is provided with an opening C, through which the end of the lead projects, and is connected with the holderA. Instead of making the screw-threads directly in the holder, I may insert a tube A in said holder, said tube being provided with internal screwthreads and becoming, as it were, a part of the holder. This tube may be split, as shown at A Fig. 3, so as to allow the lead to be easily removed if for any reason it should become broken in the hole. In operating this pencil the projecting end of the lead is grasped and rotated, the lead being thereby reciprocated by the engagement of its screw-tln'eaded sur-. face with the screw-threzuls in the holder,

In Fig. 4 I have shown a construction in which the holder A is provided with a screwcontaining the screwthreaded lead 1-3. The lead in this case is of a form other than circular and the opening 0 in the tip is made of sucha shape other than circular as to grasp the lead and rotate it when the tip is rotated. This tip is attached to the holder so that it can be rotated, and as it engages the lead the lead will be reciprocatcd by such rotation. One diameter of the cross-section of the lead is such as to cause the lead to engage the screw-threads in the holder.

' In Figs. 5 and (3 I have shown a rotatable tip 0, rcmovably attached to the holder. This tip is rotatably connected with the holder, and. a suitable holding device is associated therewith, so as to hold the tip in position. As shown in Fig. 5, the holder is provided with the groove and guideway C and the tip is provided with the projection 0". In placing the tip in position the projection O passes through the groove 0' and is then free to work in the guideway C". In Fig. (3 the tip C is provided with the projection C and fits upon the end of the holder. The sleeve A" is provided with the projection A, which engages the projection C on the tip and holds the tip in position when the sleeve is connected with the holder. This allows the tip to rotate, but holds it in posi* tion.

I have described in detail the several parts of the several pencils, but of course I do not wish to be limited to the detail of construction shown. r

1. As a new article of manufacture, a leadpencil with a removable lead, comprising a holder having a longitudinal aperture screwthreaded at some point along its length and adapted to receive the lead, the screw-threads directly engaging said lead, a rotatable tip connected with said holder and provided with an aperture through which the lead normally proj ects, and gripping means associated with said tip for engaging the lead so thatwhen the tip is rotated the lead is rotated and by the action of the screw-threads in the holder is reciprocated.

As a new article of manufacture, a leadpencil with a removable lead, comprising a holder having a longitudinal aperture screwthreaded at some point along its length and adapted to receive the lead, the screw-threads directly engaging said lead, a rotatable tip connected with said holder and providedwith an aperture through which the lead normally projects, and gripping means associated with said tip for engaging the lead comprising the following features, the aperture being other groove connected with said guideway, a projection on said tip adapted to pass along the said groove when the tip is reciprocated, said projection working in said guideway to permit the holder and tip to rotate, and means associated with the tip for engaging the lead, substantially as described.

FREDERICK \V. MUSSON.

\Vitnesses:

DONALD M. CARTER, HOMER L. KRAFT. 

